back
user profile

vardump

7,951karma·3,611submissions·March 15, 2012
recent activity (3,611 total)
comment
So random order in Go1.3. Sounds good to me. Tried anyways with ten items, the results are interesting: http://play.golang.org/p/dVZvmBOu_g With ten items, it seems to randomly (…
12y ago·view thread
comment
Just tried go1.2.1. Hashmap iteration order was not random, it was same every time. Same happens with Go playground: ( http://play.golang.org/p/px7C_lCn6d ). I got this output by r…
12y ago·view thread
comment
Rather with a PCIe connector.
12y ago·view thread
comment
The problem is not that RPi doesn't have the horsepower. It does - but you've got to use Videocore IV. Hopefully there'll be some good compiler with at least intrinsic support for it.
12y ago·view thread
comment
3GB per process. Or in Android context, 3GB RAM per app. Currently very few apps consume over 100MB RAM.
12y ago·view thread
comment
I was talking about a technique where deferred rendering, GPU is used in modern PS3 games to render surface normals, material index, Z-buffer, texture color, etc. in a buffer. Typically 128 bits per p…
12y ago·view thread
comment
Previous 32-bit ARM designs, such as Cortex A7 and Cortex A15 could address up to 1TB of RAM just fine. I think it's time to put a stop on this misinformation that 64-bit is needed for more than …
12y ago·view thread
comment
Because both CPU and GPU are generally on the same bus in mobile devices, maybe you could use those extra CPU cores as fragment/pixel shaders, if memory and cache architecture doesn't preven…
12y ago·view thread
comment
I use C++ daily at work. C++ code tends also to have a lot of allocations and data copying going on. I know you can get around those, but it seems like C++ programmers don't. C++ looks nicer at f…
12y ago·view thread
comment
I see it more like a SIMD processor than a GPU. It's not massively outstanding, but there's a lot of value of it having an open documentation, a known instruction set.
12y ago·view thread
comment
How do they rate against Videocore IV? AFAIK, ARM core represents only about 2-5% of total computing power in RPi. And can you provide some links, please?
12y ago·view thread
comment
Seriously. Biking in -10F (-23C) is just a matter of clothing. People do this all the time during winter, me included, with absolutely no issues. And I'm definitely not athletic. Although 40mph h…
12y ago·view thread
comment
It is very important to create new technologies that don't need massive supply chains, but could be created out of local raw materials, including recycled. Today's giant global supply chains…
12y ago·view thread
comment
I guess we'll see soon enough. I think oil price is the real reason behind the economic trouble. I think we're in for several more 2008-style stair step economic crashes over a longer period…
12y ago·view thread
comment
Concentrating blindly on the gasoline price is misleading. Consider our environment: We largely wear products made directly or indirectly out of fossil fuels. We eat food grown using synthetic fertili…
12y ago·view thread
comment
I think it's a big mistake to assume most of the expensive oil effect are through direct energy expenditures. Consider what is listed as "shelter", "transportation" and "…
12y ago·view thread
comment
The bug does not show up immediately with light load in Chrome (only a few tabs open). But anything heavier, and audio dropouts start. No idea whether it's a Chrome bug or OSX, but the problem st…
12y ago·view thread
comment
OS X Mavericks audio problems are still not fixed. Audio dropouts in Google Chrome more often than once per second when a lot of tabs are open. Makes for example Youtube unbearable to watch. Chrome au…
12y ago·view thread
comment
Fracking and horizontal drilling are 20-30 years old technologies. The only reason they're practical now are high oil prices. Technological improvements have been rather incremental in last 20 ye…
12y ago·view thread
comment
Last time someone made ARM CPU with 1100 in model name, Intel bought them: http://en.wikipedia.org/wiki/StrongARM#SA-1100 .…
12y ago·view thread
comment
Can you elaborate what you mean by "exponentially"? For ARMv7 vs x86, yes, x86 just destroys ARMv7 (Cortex A15 etc.) in double (float64) performance. While I do think x86 is still faster vs …
12y ago·view thread
comment
Well... I think what is really happening is that we are globally hitting the resource production rate limits. The only globally sane option is austerity, to balance the monetary reality with the physi…
12y ago·view thread
comment
Append-only b-tree/skiplist/whatever immutability can be combined with "checkpoint hashes" (think git) using for example SHA512, that can be transmitted elsewhere at a low cost and…
12y ago·view thread
comment
Any serious workstation should have three things: 1) A high quality power supply. Bad PSU guarantees crashes. 2) ECC RAM. It makes the difference between rock solid and crashes/does weird things …
12y ago·view thread
comment
64-bits has little to do with amount of addressable memory. In fact, 32-bit and 64-bit processors can address just as much. For example, 32-bit ARMv7 Cortex A15 can address up to 1TB of memory. The on…
13y ago·view thread
comment
No other major problem with HTC except their after sales support. My 2 years old HTC Desire Z is still running android 2.3.3. Well, I've got another phone brand this time with a lot better track …
13y ago·view thread
comment
This is a country which Apple has never found easy - notably, Russia bans handset subsidies, making the iPhone an expensive option for most customers. The effect is exactly the opposite;…
13y ago·view thread
comment
ECC RAM is about 10% more expensive than regular. And RAM is typically 10% of total server hardware costs. Is 1% saving really worth risking it? 32 GB ECC: http://www.newegg.com/Produc…
13y ago·view thread
comment
Well, there's a good chance the same misbehavior or error will happen again and again, until the server is rebooted. Memory errors are not necessarily transient.
13y ago·view thread